Columbia River at John Day Dam Navigation Lock, Washington water temperature

Columbia River at John Day Dam Navigation Lock, Washington · River

The current water temperature at Columbia River at John Day Dam Navigation Lock is 20.7 °C (as of September 8, 2026, source: USGS).

A river can change temperature within hours — snowmelt, rain or power-plant operations show up immediately. That is why the measured value counts here, not an estimate.

20.7 °C

Measured: September 8, 2026 · continuously updated

💧 Water 20.7° · ☀️ Air 5.6° · high today 14.1°

Temperature trend of recent weeks

Columbia River at John Day Dam Navigation Lock, Washington — Photo: USEPA Environmental-Protection-Agency · Public domain · Wikimedia Commons

Measurement series & statistics

This measurement series includes 9 data points since September 7, 2026.

Lowest recorded value: 20.7 °C on September 8, 2026 · highest value: 20.9 °C on September 7, 2026.

Nearby waters

Columbia River, Right Bank,, Cliffs, Washington · 1.5 km away13.8 °C Deschutes River, Moody, near Biggs, Oregon · 19.7 km away11.1 °C John Day River, Mcdonald Ferry, Oregon · 26.6 km away8.7 °C Columbia River at the Dalles Dam Forebay, Washington · 35.0 km away20.5 °C Klickitat River, Pitt, Washington · 40.2 km away13.4 °C

Frequently asked questions

Can you swim at Columbia River at John Day Dam Navigation Lock right now?
The current water temperature is 20.7 °C. See live swimming conditions, weather and quality in the BrrChecker app.

How warm is the water at Columbia River at John Day Dam Navigation Lock?
Currently 20.7 °C (updated continuously).

← All waters · Warmest rivers today · Water temperature in United States